PHP 7 file_put_contents() Function
❮ PHP Filesystem ReferenceExample
Write data to a file:
<?php
echo file_put_contents("test.txt","Hello World. Testing!");
?>
The output of the code above will be:
21
Definition and Usage
The file_put_contents() writes data to a file.
This function follows these rules when accessing a file:
- If FILE_USE_INCLUDE_PATH is set, check the include path for a copy of filename
- Create the file if it does not exist
- Open the file
- Lock the file if LOCK_EX is set
- If FILE_APPEND is set, move to the end of the file. Otherwise, clear the file content
- Write the data into the file
- Close the file and release any locks
Note: Use FILE_APPEND to avoid deleting the existing content of the file.
Syntax
file_put_contents(filename, data, mode, context)
| Parameter | Description |
|---|---|
| filename | Required. Specifies the path to the file to write to. If the file does not exist, this function will create one |
| data | Required. The data to write to the file. Can be a string, array, or a data stream |
| mode | Optional. Specifies how to open/write to the file. Possible values:
|
| context | Optional. Specifies the context of the file handle. Context is a set of options that can modify the behavior of a stream. |
Technical Details
| Return Value: | The number of bytes written into the file on success, FALSE on failure |
|---|---|
| PHP Version: | 5.0+ |
| Binary Safe: | Yes |
| PHP Changelog: | PHP 5.1 - Added support for LOCK_EX and the ability to pass a stream resource to the data parameter |
❮ PHP Filesystem Reference
